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Lobosea: Testacealobosia: Arcellinida: Difflugina (formerly Arcellina): Hyalospheniidae

 Hyalosphenia cuneata
Stein

Hyalosphenia Genus: Test ovate, discoid in cross-section; pseudostome a terminal slit (Illustrated Guide, 1985).
Species: Test 75 μm long, 60 μm wide (Cash, The British Freshwater Rhizopoda and Heliozoa vol. II, 1909).

Hyalosphenia cuneata Stein, test 60 μm long, 39 μm wide, L/W=1.5, pseudostome 14 μm wide, x 640, Yakebe-ike (pond), Sayama park, Higashi-Murayama city, Tokyo, Japan, February 11, 2006 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Hyalosphenia cuneata Hyalosphenia cuneata Hyalosphenia cuneata

Images of collecting locality: Yakebe-ike (pond), Sayama park, Higashi-Murayama city, Tokyo, Japan, February 11, 2006 by Y. Tsukii

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